docs: created initial "Frequently Asked Questions" page

packages/web/src/routes/docs/faq/+page.md

@@ -0,0 +1,22 @@
+---
+title: Frequently Asked Questions
+---
+
+## Is There a Chrome or Firefox Extension?
+
+**Short answer**: not yet.
+
+**Long answer:** at the time of writing, we've just released our first version of `harper.js` ([documentation here](./harperjs/introduction)), which will make it significantly easier to build such a product.
+That said, our road map has higher priority items at the moment, so don't expect the offical Harper maintainers to make an attempt in the near future.
+
+If you're interested in trying to make one, let us know how it goes.
+We might be able to help.
+
+## Why Doesn't Harper Support My Programming Language?
+
+Harper (particularly `harper-ls`) tries to support a wide variety of programming languages.
+If one is missing, it's probably because we haven't had time to get to it yet.
+We are entirely open to PRs that add support.
+
+If you just want to be able to run grammar checking on your code's comments, it's actually quite straightforward.
+You can use [this PR as a model for what to do](https://github.com/Automattic/harper/pull/332).

packages/web/vite.config.ts

@@ -115,6 +115,10 @@ export default defineConfig({
 								}
 							]
 						},
+						{
+							title: 'FAQ',
+							to: '/docs/faq'
+						},
 						{
 							title: 'Rules',
 							to: '/docs/rules'